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CAT25320 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT25320 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
1 / 16 page CAT25320 © 2007 Catalyst Semiconductor, Inc. 1 Doc. No. 1111 Rev. E Characteristics subject to change without notice 32-Kb SPI Serial CMOS EEPROM FEATURES 10 MHz SPI compatible 1.8V to 5.5V supply voltage range SPI modes (0,0) & (1,1) 32-byte page write buffer Self-timed write cycle Hardware and software protection Block write protection – Protect 1/4, 1/2 or entire EEPROM array Low power CMOS technology 1,000,000 program/erase cycles 100 year data retention Industrial temperature range RoHS-compliant 8 lead PDIP, SOIC, TSSOP and 8-pad TDFN packages PIN CONFIGURATION PDIP (L) SOIC (V) TSSOP (Y) TDFN (VP2) CS ¯¯ 1 8 VCC SO 2 7 HOLD ¯¯¯¯¯ WP ¯¯¯ 3 6 SCK VSS 4 5 SI PIN FUNCTION Pin Name Function CS ¯¯ Chip Select SO Serial Data Output WP ¯¯¯ Write Protect VSS Ground SI Serial Data Input SCK Serial Clock HOLD ¯¯¯¯¯ Hold Transmission Input VCC Power Supply DESCRIPTION The CAT25320 is a 32-Kb Serial CMOS EEPROM device internally organized as 4096x8 bits. This features a 32-byte page write buffer and supports the Serial Peripheral Interface (SPI) protocol. The device is enabled through a Chip Select (CS ¯¯ ) input. In addition, the required bus signals are clock input (SCK), data input (SI) and data output (SO) lines. The HOLD ¯¯¯¯¯ input may be used to pause any serial communication with the CAT25320 device. The device features software and hardware write protec– tion, including partial as well as full array protection. FUNCTIONAL SYMBOL For Ordering Information details, see page 15. CS WP HOLD SI SO CAT25320 VCC VSS SCK |
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